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Bunuel
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Use the percentage change formula: (Final Value - Initial Value)/Initial Value

For 2010-11: 400/1600 = 0.25*100 = 25% increase
For 2019-20: 400/1800 = 0.22*100 = 22% increase
APram
Hi

I am a bit confused for highest % increase for period 2010 to 11 and 2019 to 20. Both have same slope.
Can anyone explain pls?
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What is the difficulty level, please provide that detail
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What is the difficulty level, please provide that detail

You can check the difficulty level of a question among the tags just above the first post:


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For Q1 - We can easily eliminate other options and focus only on 2010-2011 & 2019 - 2020. Even if you feel less confident of directly eliminating, you can always take a minute extra and calculate.
2010-2011 & 2019 - 2020 is 400/1400 & 400/1800 respectively. Clear winner - 2010-2011.

For Q2 - You can instantly identify the lowest Trade Balance (when both Export and Import try to merge/ or are closest). For the upper limit, check those gaps wherein the Export and Import lines are farthest from each other. 2018 - Balance: 800; 2011 - Balance: 100. Range is 700.
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APram
Hi

I am a bit confused for highest % increase for period 2010 to 11 and 2019 to 20. Both have same slope.
Can anyone explain pls?
You can compare just the slopes when the bases are the same. Here the increase of 400 is the same, however, bases for both are different. One base is 1400 while the other is 1800. Hence, the one with thr lower base will have a greater percentage increase.
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